Signal Generator Overview

Front Panel Display

3. Annunciators

The display annunciators show the status of some of the signal generator functions and indicate any error conditions. An annunciator position may be used by more than one function. This does not create a problem, because only one function that shares an annunciator position can be active at a time.

Φ M

This annunciator (E8257C and E8267C only) appears when phase modulation is on. If

 

frequency modulation is on, the FM annunciator replaces Φ M.

ALC OFF

This annunciator appears when the ALC circuit is disabled. A second annunciator,

 

UNLEVEL, appears in the same position if the ALC is enabled and cannot maintain the

 

output level.

AM

This annunciator (E8257C and E8267C only) appears when amplitude modulation is on.

ARMED

This annunciator appears when a sweep has been initiated and the signal generator is

 

waiting for the sweep trigger event.

ATTEN HOLD

This annunciator (Option 1E1 or E8267C only) appears when the attenuator hold

 

function is on. When this function is on, the attenuator is held at its current setting.

DIG BUS

This annunciator appears when the Digital Bus is active, and the internal oven reference

 

oscillator is not cold (they appear in the same location).

ENVLP

This annunciator appears if a burst condition exists, such as when marker 2 is set to

 

enable RF blanking in the Dual ARB format.

ERR

This annunciator appears when an error message is in the error queue. This annunciator

 

does not turn off until you either view all the error messages or cleared the error queue.

 

To access error messages, press Utility > Error Info.

EXT

This annunciator appears when external leveling is on.

EXT1 LO/HI

This annunciator (E8257C and E8267C only) appears as either EXT1 LO or EXT1 HI,

 

when the ac-coupled signal to the EXT 1 INPUT is <0.97 Vp or >1.03 Vp.

EXT2 LO/HI

This annunciator (E8257C and E8267C only) is displayed as either EXT2 LO or

 

EXT2 HI. This annunciator appears when the ac-coupled signal to the EXT 2 INPUT is

 

<0.97 Vp or >1.03 Vp.

EXT REF

This annunciator appears when an external frequency reference is applied.

FM

This annunciator (E8257C and E8267C only) appears when frequency modulation is

 

turned on. If phase modulation is turned on, the Φ M annunciator will replace FM.

I/Q

This annunciator (E8267C with Option 002/602 only) appears when I/Q modulation is

 

turned on.

L

This annunciator appears when the signal generator is in listener mode and is receiving

 

information or commands over the RS-232, GPIB, or VXI-11 LAN interface.

 

 

14

Chapter 1

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Agilent Technologies E8267C PSG, E8247C PSG CW, E8257C PSG manual Annunciators

E8267C PSG, E8247C PSG CW, E8257C PSG specifications

Agilent Technologies, a leading provider of electronic test and measurement equipment, offers a range of signal generators that are pivotal in various applications, including telecommunications, aerospace, and research. Among their top-tier offerings are the E8257C PSG, E8247C PSG CW, and E8267C PSG. These signal generators are known for their exceptional performance, flexibility, and cutting-edge technologies.

The E8257C PSG is a high-performance microwave signal generator capable of generating signals from 10 MHz to 40 GHz. Its versatility makes it ideal for applications such as radar and satellite communications. One of the standout features of the E8257C is its low phase noise and superior output power, which ensure high-quality signal generation. The instrument incorporates advanced digital signal processing technology, allowing users to create complex modulated signals with precision. It also boasts a comprehensive set of modulation formats, including AM, FM, PM, and pulse modulation, making it suitable for diverse testing scenarios.

The E8247C PSG CW is designed specifically for continuous wave (CW) applications, covering frequencies from 500 kHz to 20 GHz. This generator is optimized for high stability and low output noise, making it ideal for applications that require a reliable signal source, such as manufacturing testing and maintenance of communication systems. The E8247C features a compact design and is equipped with an intuitive user interface, allowing quick access to essential functions. Its frequency agility and fast switching capabilities enhance productivity, enabling engineers to optimize their workflow.

The E8267C PSG delivers unparalleled performance in the microwave frequency range of 250 kHz to 70 GHz. It includes advanced modulation capabilities, allowing users to generate complex waveforms with relative ease. The E8267C supports various digital modulation schemes, including QAM, which is crucial for testing modern communication systems. Its high output power and excellent spectral purity make it suitable for both R&D and manufacturing applications. Additionally, the E8267C features built-in functionality for frequency and power sweeps, providing users with extensive testing options.

In summary, Agilent Technologies’ E8257C, E8247C, and E8267C signal generators are integral tools for professionals seeking high performance and versatility in their testing environments. With unique features and advanced technologies, these generators cater to the demands of modern applications, ensuring reliable and accurate signal generation for a wide range of industries. Whether it's for research, development, or manufacturing, these instruments demonstrate Agilent's commitment to delivering top-notch testing solutions.